The Denver Nuggets waived guard Nick Johnson, center Oleksiy Pecherov and guard/forward Devin Sweetney, reducing their roster to 15 players, the team announced on Saturday.Johnson, 6-3, 202, appeared in six games (one start) for Denver in the preseason, averaging 2.2 points, 2.2 rebounds and 1.7 assists in 17.7 minutes per game.Pecherov, 7-0, 232, appeared one preseason game, scoring six points and grabbing one rebound in 7.4 minutes.Sweetney, 6-6, 200, played in four preseason games, averaging 1.3 points in 3.3 minutes per game.